Year % of total population 1960 50.0430353701477 1961 49.7401348267495 1962 49.4722629960949 1963 49.2215058419198 1964 49.09848863105 1965 49.1450284175043 1966 49.2244782323644 1967 49.3296520342351 1968 49.4228346934333 1969 49.4386437503188 1970 49.3921398168742 1971 49.2885994559393 1972 49.1455290404621 1973 48.9814684787301 1974 48.7872606262535 1975 48.5667324128863 1976 48.34320252961 1977 48.1437432697556 1978 47.9970512453223 1979 47.8848333985217 1980 47.7869534419043 1981 47.664227831606 1982 47.5660386577748 1983 47.562911371453 1984 47.6024762919993 1985 47.7110992944908 1986 47.9356653183145 1987 48.253915739275 1988 48.9350279570109 1989 49.3622204209327 1990 49.6504728861806 1991 50.3183897252087 1992 50.9537758129631 1993 51.3105550259006 1994 50.6639929750062 1995 50.2467561476678 1996 50.8733935059766 1997 51.4886942408356 1998 52.1265572808241 1999 52.8126810491275 2000 53.4801913446576 2001 54.1204306527008 2002 54.7252425156439 2003 55.2803795250648 2004 55.8080662360833 2005 56.2926467926627 2006 56.7384174859393 2007 57.1830848189844 2008 57.6437556772826 2009 58.0795626211313 2010 58.3778365699324 2011 58.5629808620903 2012 58.7133944670177 2013 58.853287836476 2014 59.019154161467 2015 59.2226104471505 2016 59.4468037432912 2017 59.6896100845022 2018 59.9604025240698 2019 60.2688667106128 2020 60.6125836929501 2021 60.9774120145504 2022 61.3046171974763 2023 61.621510685101